John W. Campbell, Jr. was the editor of Astounding/Analog. He famously nurtured Isaac Asimov. Once, when Asimov described a problem he was having with a story, Campbell said, "When a good writer has that sort of problem, it's because he started the story in the wrong place, and 9 times out of 10, too soon.
I'm quoting from memory of Asimov's quoting from memory, so trust as much as you wish, but Asimov followed up by saying that you could always put the information in a flashback.
Now, many -- maybe most -- of my stories start at the beginning and end at the end of the events.
Still, I remember that line, maybe not at the right times.